Regardless of whether an input file may be broken, it must not crash

the decoder.

diff -Nur audacious-plugins-fedora-2.2-orig/src/adplug/core/lds.cxx audacious-plugins-fedora-2.2-adplug-lds/src/adplug/core/lds.cxx

--- audacious-plugins-fedora-2.2-orig/src/adplug/core/lds.cxx	2009-11-22 23:49:52.000000000 +0100

+++ audacious-plugins-fedora-2.2-adplug-lds/src/adplug/core/lds.cxx	2010-01-25 19:09:28.000000000 +0100

@@ -665,6 +665,9 @@

 void

 CldsPlayer::playsound (int inst_number, int channel_number, int tunehigh)

 {

+  if (inst_number > numpatch-1) {

+      return;

+  }

   Channel *c = &channel[channel_number];    // current channel

   SoundBank *i = &soundbank[inst_number];   // current instrument

   unsigned int regnum = op_table[channel_number];   // channel's OPL2 register